Re: Air Induction Service? help
be more specific when you describe a problem so someone can be more specific with their reply.
but in the mean time yes try cleaning the maf but be gentle as this is a very expensive and crucial part.
as for the 89 octane i dont run anything less but truthfully a stock engine generally will not run any better or worse by changing the octane of fuel you use.
the higher the octane rating of the fuel the more stable it becomes , so to speak.
higher octane fuel is more resistant to detonate due to a glowing spark plug or carbon deposit and most of all compression.
high compression requires high octane or the fuel will ignite before the sparkplug fires.
as for the air bypass valve that you had replaced are you talking about the idle air control valve on the top of the intake manifold back close to the firewall ?
if so that does not keep an engine from starting or hesitating !!!
that valve only controls the amount of air during idle and as soon as you throttle the engine up 100 rpm or so it will have no affect on the engine and also when they scan the truck for engine codes it is incapable of sending a code to the computer so you could have had a bad valve but i am guessing that it wasnt even bad in the first place.
so they already snuckered you for a $60 + part and labor.
tell us more about your problems so we can cut up the dealers some more !!!!
i would rather push my Ford than drive your Chevy !